🧩 1. What Are They? Vue offers two ways to write components: API Style Introduced In Description Options API Vue 2 Organize …

🧩 What Are Lifecycle Hooks? Every Vue component goes through a lifecycle — from creation to destruction.Lifecycle hooks are special functions that …

🧩 What are provide and inject? provide and inject are Vue features that let you share data or functions between a parent …

🧩 What is a Component? A component in Vue is a reusable instance of a Vue app, with its own: They help …

In Vue 3 (especially when using the Composition API), fetching data cleanly and reactively is simple once you understand the pattern.Let’s go …

Slots let you pass content (HTML, text, or components) from a parent into a child component, so you can create highly reusable, …

🧩 1. What Is a Component? A component in Vue is a reusable building block that encapsulates: Each Vue app is built …

🧩 1. What is setup()? 🧠 Concept: The setup() function is the entry point for using the Composition API inside a Vue …

⚙️ 1. What Are Methods? In Vue, methods are regular JavaScript functions you define inside the component.They are used for logic, event …

🧠 1. Computed Properties 📘 What they are Computed properties are reactive values that depend on other reactive data.They are cached and …

🧩 1. Interpolation ({{ }}) Interpolation lets you insert dynamic data into your HTML templates. ✅ Example: 🧠 Output: You can also …

In Spring, the Validator interface is used for custom validation logic on objects, typically before saving them to a database or processing …

Spring Web Request Lifecycle — describes the sequence of steps an HTTP request goes through in a Spring (Boot) application from arrival …

Spring Caching — a framework feature that allows you to store method results in cache to improve performance and reduce database or …

@JsonIgnore — a Jackson annotation used to exclude a field or method from JSON serialization or deserialization. 🧩 Purpose Prevents sensitive or …

@SpringBootTest — used to load the entire Spring application context for integration testing in Spring Boot. 🧩 Purpose It allows you to …

@PreFilter & @PostFilter are Spring Security annotations used to filter collections or arrays before or after a method executes — based on …

Spring Security ContextThe SecurityContext in Spring Security holds the authentication and security-related details (like the logged-in user, roles, etc.) for the current …

🔹 1️⃣ String.trim() The classic method for removing whitespace from both ends of a string. Syntax: Behavior: ✅ Example: Output: 🔹 2️⃣ …

🔹 1️⃣ What Is a Static Block? A static block (also called a static initializer) is a block of code inside a …

In Java, asynchronous methods are methods that start a task and return immediately, allowing the program to continue executing without waiting for …

Sorting a list of strings in Java is straightforward — and you can do it in several ways, depending on whether you …

In Java, the volatile keyword is used to indicate that a variable’s value may be changed by multiple threads, and that all …

In JUnit (Java Unit Testing framework), annotations are special markers (prefixed with @) that tell JUnit how to run and organize your …

🧠 What is EXISTS? EXISTS is a logical operator in SQL that checks whether a subquery returns any rows. It’s often used …

Here’s a comprehensive guide to Docker container commands with explanations and examples. I’ll organize them by category so it’s easy to reference. …

Here’s a comprehensive list of Docker commands related to images, broken down by category, with explanations and examples: 1. Pulling and Searching …

A Secret in Kubernetes is an object that stores sensitive information such as passwords, tokens, SSH keys, or certificates, separate from application …

A ConfigMap in Kubernetes is an API object used to store non-confidential configuration data in key-value pairs, so you can separate configuration …

A Kubernetes Ingress is an API object that manages external access to Services, typically HTTP and HTTPS traffic, providing routing, load balancing, …